Lawn-sprinkler.



P. E. OPITZ.

' LAWN 'SPRINKLEL APPLICATION FILED SEPT. 8, 1908.

Patented June 14,1910.

YW ma UNITED STATES PATENT OFFICE.

FRANK E. OPITZ, 0F LONGBEACH, CALIFORNIA, ASSIGNOB TO BABNEY vBEOVTFI' AND g EDITH H. SPARLING, OF LOS ANGELES, CALIFORNIA.

LAWN-srnmxmm.

Specieation ot Letters Patent. Patented June 14, 1910,

Application led September 8, 1908. Serial No. 452,152.

direct the water in jets to distribute it over the lawn.

The main object of the 'present invention is to so construct a sprinkler of this character that its weight and cost will be reduced to a minimum.

A further object of the invention is to provide a sprinkler of this character which will possess maximum strength and durability.

Another object of the invention is to provide a sprinkler of this type which will spread or direct the water 1n all directions thereby increasing the area covered in one position of the sprinkler.

The accompanying drawings illustrate my invention.

Figure 1 is a perspective of the device. Fig. 2 is an elevation of the device showing the lonfritudinal spread of the water. Fig. 3 is a plan of the device showing the spread of the water in all directions. Fig. 4 is a side elevation. Fig. 5 is an end elevation. Fig. 6 is a cross section on line :c6- in Fig. 4.

The sprinkler comprises a tubular member 1 bent or curved in arc shape so as to form an arch tube, said member being supported on a stand or support 2, which may consist of wire bent to form two inverted V-shaped portions 3 connected by parallel horizontal portions 4. The tubular member 1 is preferably formed of sheet metal comprising an upper portion 5, semi-circular in cross section and having laterally extending flanges 6, and a bottom portion 7 extending across and closing the bottom of the semi-circular upper portion 5| and havin its edges turned over and clenched on the anges v6, aforesaid, to form a tight joint between the top and bottom portion. One end of this tubular member 1 1s closed by a stationary plate 8, and the vother end of said tubular member is pro# vided with a screw coupling member or socket 9. or other means for attachment and connection of the hose. The standard portions of the su port member 2 are attached to the bottom ate 7, as by means of clips 10, secured to said) standards and having flanges 1l clenched over the projecting side portions 7 of the tubular member 1.

The upper portion 5 of the tubular member 1 is perforated, the perforations or openings 12 therein being arranged in a series of rows, each row extendin transversely of the tubular member, and tlie respective rows bein distributed lengthwise of thc tubular mem er. The holes in each row extend radiall with reference to the curvature of the tu e so that holes at diierent parts, lengthwise of the tube, are directed at variant angles in a longitudinal plane; whereas, different holes in any one row are directed at variant angles in a transverse plane.

The operatlon of the device is as follows The sprinkler having been placed to proper position, and the hose being connected, the water is turned on and' issues through the openings 12 in the direction determined by the line of extension of the opening; thus, the water issuing from the middle row of perforations will be distributed approximately in a plane transverse to the tubular member 1 at the center thereof, the lateral divergence ofthe perforations causing the water so issuing to extend over a considerable distance transversely of the sprinkler. The water issuin from the next row of perforations at eit er side, in. addition to its lateral distribution, will be distributed longitudinally,by reason of the inclination of this row of openings, in a longitudinal plane,

and as the inclination of the successive rows increases with the distance from the center, the longitudinal projection of the water will correspondingly. increase so that the water is distributed over a considerable distance each way longitudinally of the sprinkler, as shown in Fig. 2, as well as over a considerable distance transversely of the sprinkler, as shown in Fig. 3. The jets of water are indicated in dotted lines in these figures, the trajectory being diagrammatically illustrated by straight lines to show the amount of projection, in place of the actual parabolic course of the jets. By this construction the arched tubular sprinklei may be made considerably shorter than the ordinary straight tubular sprinkler, and can be made to cover an area much larger than that covered by the vstraight sprinkler, and practicall of the same Wi One result of this s ortening of the sprinkler for a given capacity is that it is rendered much ighter and cheaper. The shortness of the s rinkler also avoids the objectionable bucklm which tends to rupture the straight sprin ler, and the arch formed of this sprinkler is also yof advantage in this connection, as it presents a construction of maximum strength, both in supporting the Weight of the body of Water when the s rinkler is in operation and for sup orting tiie sprinkler from the middle when 1t is being carried. Another advantage of this construction is that it Waters the lawn over a substantially rectangular area, which can be increased or diminlshed in all directions simultaneously by simply varying the pressure' of the Water.

What I claim is A lawn sprinkler comprising a longitudinally curved tubular member, a support holding said tubular member in position to constitute an arch presenting curvature in a vertical plane of less than half a circle,

said tubular member having openings in its upper portion distributed transversely and longitudinally thereof, the openings in different longitudinal ortions of the member belng presented at different inclinationsin a longitudinal plane, and the openings in the different transverse tubular portions being presented at diiferent inclinations in a transverse plane, whereby water issuing from said member through said openin 1s rojected laterally and longitudinally rsom t e openings to cover a rectangular area Whose dimensions are greater longitudinall and transversely than the dimensions o the tubular member, closure means at one end of said tubular member and connecting means at the other end of said tubular member for connection of a Water supply.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 27th day of August, 1908.

FRANK E. OPITZ.

In presence of ARTHUR P.v KNIGHT, FRANK L. A. GRAHAM. 

